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Neisseria elongata subsp elongata infective endocarditis following endurance exercise


A 31-year-old Argentinian woman presented with a 3-week history of fever, night sweats, myalgia and lethargy following a work trip to Uganda where she ran a marathon. Malarial screens were negative but C reactive protein, erythrocyte sedimentation rate and neutrophil count were raised and she was anaemic. A new pansystolic murmur was heard over the mitral valve and the transthoracic echocardiogram showed a large vegetation (>1 cm) with at least moderate mitral regurgitation. Blood cultures grew Neisseria elongata, subsp elongata treated initially with ceftriaxone then oral ciprofloxacin to complete 4 weeks of treatment. CT scan revealed a wedge-shaped area of low attenuation in the spleen in keeping with a splenic infarct. Seven days postadmission, the patient underwent a successful mitral valve repair. Recovery was complicated by a likely embolic infarct in the right frontal lobe, but the patient was discharged 12 days postoperative with no neurological sequelae.

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